Device for stressing springs



Dec. 6, M RUPING DEVICE FOR STRESSING SPRINGS Filed March 5, 1952 y 7n 'rentar a 277. Hpzng i i r Spanner` z the Patentedv Dec. 6, 19732 Y nrING, or MUNI'cm-GEBQMANY/ DEVICE m meer@ i. L

This invention relates to adevice for stressing springsem'ployed for fixing railway rails on their support. Rail xing means of this. y l

A; stressed; -rl-liefgrippx'erf claws f bea'rr-frm- 1 i kind are described for instancein U. S. D Patent 1,798,357.

According to the invention the device consists of an inverted U-shaped pressure'applying memberfthe distance between the limbs of which corresponds to the thickness of the cylindrical shaft which lis adapted to' be turned j the rail. At both its'ends the shaftis provided with eccentrically disposed journals', each abovejthe journal casing by a common handle.

In the accompanying drawing a constructional example of the invention is illustrated. Fig. 1 is a vertical section through thetool in position on the. rail and f Fig'. 2 a side elevationcorrespondingto.

Fig. l without the sheet metal cover.

On the crown of an inverted U-shaped iron rests a cylindrical shaft d. This sha-ftis pro- Vvided at eitherend with eccentrically disposed journals e, e eachof which is journalled in the pivot holes at the end ofeach of the two grippers f. In the example shown, these grippers f engage lwith those claws f under the head of the rail @when the invertedU-shaped iron a is placed over the rail g. The ends of thejlimbs a' of the inverted U- shaped ironbear against the springs h. 1 Of somewhat extended Y and .is lmade `hexagonal at itsV end for slipping -on Va "Spanner Through turning the shaft Z by means vof the j pressureV bearing I) is` pressed- Y "o against the inverted U-shaped iron aand con- Y rail head and on thetop surface vof whichv a by a lever is journalled parallel to,

foot, the two gripper tongs equally directed claws are connected.together a is disposed apressure bearing b in which` the two journals e and e lthe journal elgis sequestri fliegende ofthe-1ibs vaf-0f fue in;

verted '1U-shaped" iron' against the springs l@ Y .sofsthat these! springs "are "stretched, that, :irs-

beiow against the m11 head:

"Theffnvrted ed iron isso-"formed abit-sf limb 'j ends:tlh'at'above'.A the lspring'sfityj Y leaves roo'inv for the heads ofthe two spring f n j clipsl Z. `WheI'i these" vspring slipsjhave'ben pushedunderthefbow. in, the tension apply- C9-7' i i ing apparatus is released by turning back the .shaftd and is'then' removed. 'The springs are v i y -thus clamped under the spring clips Z.

lThe"eccentric gear is surrounded byza prol v j tection sheet a.' The object ofy the latter is 651i not .only tokeep away dirt but alsoto prevent the eccentrlcV gear from being liftedy odi "the invertedU-shaped iron a whenthe appliance is beingcarried." l

Of thefour grippers f each two on the same' Y side of the rail are connected together by La common handle o. By pressing' thel `twoV handles i0 together the tongs formed bythe grippers are opened and on the handles beingV released the tongs/close again so that the atlever. The springs are held in the tensioned i' Y state Vautomatically as the frictionalaction 85,

ofthe eccentric prevents the latter turning Y back unintentionally. Consequently the man 'who tensions the springs can also apply the' j Y spring .clips Z.

. .Theiimbs a ofthe mvefted'ufshapd'irn are provided Vat their lower ends with fopeni p.` These Openings-are of Shape y their upper edgepand V j l the SpringV clip Z a crow-bar like lever Q canf be inserted. By 4'swingingfthe upperiend of this leverjupwards, 'the `spri'ngcliplcan .be :forced outwhen it cannot beV removed by` Y. hand only for the purpose of releasingv tha; railfastening. .'V j

'What I'claim is tachment and removalof the tensioning ape` j Y paratus'intoand out .of its operativeposition `l` .i A device'for stressing springs `used for f 'y 1 j #1,990,415

vfixing railway krailsdtotheir supports,r vcomprising in combinationl an inverted U-shap'ed member having its limbs spaced vapartpby thel thickness of the rail head, a cylindrical shaft I 5 on the crown of theV said inverted Ushapedk v member capable of being rotated and lying fpaiallelto the rail, a bearing for said shaft,Y y Y d *4 the bearing being Vdisposedon the crown rof i Y the 'said inverted U-shaped mernbernand capa-f j .mfble to slide transversely to the rail', e`c`e'ent'ri! g cally arranged journals at :the vends -ofthe shaft,.tw0 pairs of vgripper tongs pivoted at* Y the journals,rinwardly directed .claws latV the Y ends of the arms" of said tongs and the length VIL'15 jof the said gripper arms beingin'sch 'propor-V i ltintoh the heightgofwthe invertedfU-sha'ped pressure memberrthat "Qnfrthe fsaid rnemloer Y 'Y restingon the two springs lying onfthe `foot y I I l 20 to engage under thehead `o ,fthe rail.

"i having similarly directed/Claws. t' L" of therailthe saidcla'vvs willfbe'in aposition -l l kp 2. A :device according to flaim'll tvvoV haii. 4' ydles arranged Vabove thegbearingleaeh Vcpjn- Vnecting the twoarms of thatgripperV tongs' 

